In this chapter, we discuss salient features of metaphoric language such as its economic nature, coherence and systematicity, and category formation. At first, we discuss how metaphors function as economical tools in our communications. After a brief review of the current literature, we explore how metaphoric language can be cognitively efficient. Next, we argue that metaphors are used in a systemic and coherent manner in the language referring to Lakoff and Johnson’s Metaphors We Live By. We demonstrate that metaphors operate in a systematic and coherent way in which a great number of verbal realizations originate from a single conceptual metaphor. Finally, we discuss how an intended meaning can be expressed by literal words or less-typical terms in metaphor-based category, and why encoding it in the most typical term enhances communicative effectiveness.